It is not necessary to do that. The register will reset to 0 after reading.
Eric On 03/30/2018 03:33 AM, Rex Zhu wrote:
Signed-off-by: Rex Zhu <rex....@amd.com> --- drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c index aaa9f5b..38cf3a1 100644 --- a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c @@ -3368,6 +3368,19 @@ static int smu7_get_gpu_power(struct pp_hwmgr *hwmgr, "Failed to start pm status log!", return -1);+ cgs_write_ind_register(hwmgr->device,+ CGS_IND_REG__SMC, + ixSMU_PM_STATUS_40, 0); + cgs_write_ind_register(hwmgr->device, + CGS_IND_REG__SMC, + ixSMU_PM_STATUS_49, 0); + cgs_write_ind_register(hwmgr->device, + CGS_IND_REG__SMC, + ixSMU_PM_STATUS_94, 0); + cgs_write_ind_register(hwmgr->device, + CGS_IND_REG__SMC, + ixSMU_PM_STATUS_95, 0); + /* Sampling period from 50ms to 4sec */ msleep_interruptible(200);
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